The Domain works under Linux (Linux lc0 4.9.0-8-amd64 #1 SMP Debian 4.9.144-3.1 (2019-02-19) x86_64 ). But I will make a screenshot from my Windows 10 Pro Computer. Sorry, but I couldn´t find the right syntax.

Thank you for your answear. Actually, I need a script that save any web page as an image file. The page "screenshotmachine.com" offers an API file. This works too. But I would like to do that without an API.